Of the following, which is a proposed explanation for an observation?
a. principle
b. law
c. theory
d. fact
e. hypothesis
E
Biology & Microbiology
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A DNA molecule used to carry a foreign gene into a host organism is called a
A. plasmid. B. probe. C. vector. D. blot.
Biology & Microbiology
The study of the crown gall tumor found
A. a bacterial plasmid promoter that was similar to plant promoters. B. an R plasmid. C. incorporation of the bacterial chromosome into the plant. D. incorporation of the plant chromosome into the bacteria.
Biology & Microbiology
Each of the following small molecules easily diffuses through the cell membrane EXCEPT ____
a. steroid hormones b. O2 c. H2O d. glucose e. CO2
Biology & Microbiology
What is the 1st stage of Meiosis I?
a. Prophase I b. Prophase c. Prophase II d. Metaphase I e. Interphase
Biology & Microbiology